Smelter-smoke precipitator and dust collector



ldatented Use. 21, V926.

iran srarrs JOHN lVLLER, O?? DOUGLAS, RIZONA.

SVELTER-SMOKE ERECPITATOR LNE Dlia' COLLECTOR..

Application led Tune l0, 1925.

This invention relates to an improved contrivance adapted particularly for use in connection with smelting furnaces, and its purpose is to provide a means for automatically conducting the smoke through means which serves as a precipitator and dust collector.

It has been observed that in the vicinity of metal smelters, the escaping smoke constitutes a menace to plant-life, owing to the constituents of the smoke. The fumes and smoke contain a large percentage of sulphur, in addition to metallic particles, and this sulphur separates from the smoke and destroys vegetation even within fifty miles of a smelter plant.

What l propose is a structure for consuming the smoke to eliminatie the sulphur by water jets, and to collect the metallic particles suspended in the smoke in what may bo referred to as a settling receptacle.

The structural details and method of operation will he made clear by the following description and drawings.

ln the accompanying drawings, forming a part of this application, and in whch like numerals designate like parts throughout the same:

Figure l is a side elevation of more or less diagrammatic form, showing the complete new apparatus.

Figure 2 is an enlarged detail section, taken approximately on the plane of the line 2--2 and looking downwardly.

Referring to the drawings in detail, the reference character l designates a convertor, blast furnace, or a reverberatory furnace, or other smoke or fume producing device provided with openings 2, to accommodate an appropriate air or other form of blast device (not shown). Leading from the outlet of this furnace is a conducting pipe 3, the depending end of which is connected a with a nozzle 4. The nozzle is a mere hollow annulus surrounding the discharge end of the pipe and provided with a multiplicity of apertures through which jets of water are ejected, the water being supplied to the nozzle by a pipe 5. These jets enter and spread in an open top collector 6, having a downwardly extending conduit 7, leading Serial No. 35,146.

to a1 settling tank 8, preferably of concrete. The tank is provided in one side wall with a door 9, by means of which access may be had` to the interior for removing solid particles4 which settle there. A draining screenY l0 is disposedk across the end of this tank.

The fumes and solid particles, which are under pressure, pass through the pipe l into the collector 6, which actually constitutes ai mixing device. Here smoke and particles contained therein pass fromthe discharge end of the pipe into a surrounding water spray, which serves to precipitate sul phur, one of the main constituents of the smoke emanating from an ore furnace. The discharge water mixed with the vapors and solids then passes down through theconduit 7 into the collecting chamber formed in the aforesaid settling tank 8, the water dis-V charging through the strainer l0 and the i solid particles remaining in this chamber to be removed at an appropriate time. It will thus be seen that the sulphur contained in large percentage in the smoke will be precipitated while the valuable metallic par ticles will be collected and retained. rilthough the invention has been specified as being adapted for use more particularly with ore smelting furnaces, it is clear that it is highly adaptable for use in connection with a common furnace, and will serve as an effective smoke consumer.

No doubt, a consideration of the specification in connection with the drawing will enable persons skilled in the art towhich the invention relates to obtain a clear under* standing of the same. Therefore, a more lengthy description is thought unnecessary. Y While l have shown the preferred embodimentof the invention it is to be understood l that various changes in the size, shape and arrangement of parts may be resorted to, without departing from the spirit of the invention or the scope of the appendedclaim.

VJ hat is claimed is:

An apparatus for the purpose described, a collector open throughout at its top, a de- -livery pipe having a downwardly directed open end smaller than the top of the collector and arranged immediately above'the itil) center of said coleotor, hollow mundos, olopening :t conduit between said collect-or S0 smaller than the top of the Collootol7 with and Said tank, und n stlmno' controlling tho openings in its bottom 'ul Surrounding tho sind discharge opening' of the tank. 10 lower end portion of said pipe and disposed In testimony whoreojt nfx my Signatura above the central portion of the collector,

a Water supply pipe connected with said .his JOHN MILLER. hollomT annulus, a tank havmg a chsohzugo mark 

